Radiator for gas engines



F. TODD.

RADIATOR FOR GAS ENGlNES. APPLlcATIoN man reg. '1a. 1919.

Patented Apr. 18, 19.22.

l. r 20a u 21a J 216;@

Ela/7%" @ald F. IODD.

RADIATOR FOR GAS ENGINES.

APPLICATION FILED FEB. I3. 1919. I l 1,41 3,302, Patented Apr. 18, 1922.

2 SHEETS-SHEET 2.

i EADIATOE EOE" GAS ENGINES;

To all w hdm' 'it may concern ,Y i

Beit known that I, FRANKTODD, aV citizen of the United States,- resident of Minneapolis, county of Hennepin, State of Minnesota,- have invented certain new and useful lm-y provements in Radiators forGas Engines,

of which the following is a specification.

The object of'my invention is to provide a radiator of such construction that any section or. any individual pipe therein will be.

easily accessible for substitution or repairs, special provision being made for closing the joints between the adjacent pipes to elimi-k which the Vtubes caribe arranged vertically or horizontally, as desired, andany unit or section calrbe removed without takingthe radiator off the car.

The invention consists generallyinxvarious constructions and combinations, all as hereinafter described and ed out in the claims. l Y

In the accompanying drawings forming particularly pointpart of this specification,l v

Figure l is a front vview ofk a portion of a radiator embodying my invention,

Figure 2 is `a vertical sectional View through the radiator, showing the manner of mounting the pipes therein, Y

VIVigure 3 is a detail sectional view, showing the preferred form of ground joint between the pipes, .Y i

Figures 1 and 5 are detail views 0f the rclampby means of which the Ypipes Vare held in assembled relation in the radiator.

In the drawing, 2 represents the head or i .are held in parallel relation by suitable bracing means, n such as ,bars 5. The `opposite walls of these chambers 3 and 3 a are preferably recessed, as shown in Figure 2,y to

provide spaces- 6 for the insertion of the cir-- culating tubes between vthe chambers, and

These Y Specication of'Letters'Patent. l 4I )atent-d ApI- 1.8, 11922; `Application filed February 13, 1919. ySerial Nlo.276,84 4, i i I vertical' extensions 'T are provided ativthe riE-r ori-*1a.

rear of the chambers for communicationof y the circulating tubesl therewith. There maybe anj7 suitable number 'of the circulating tubes in-each group and as many groups ar,-V

ranged side by side as thelength of the ral diator demands. i, In the drawi'ngl 'have shown each group composed of four tubes,

but this number may ofcourse, be increased or decreased, as desired. y

8 represents the circulating tubes, the inner Ones having nipples`9 formed on the" ends thereof, each nipplehaving a flaring seat 10 at one end and a tapered section 1,1 at the other end terminating in a straight portion 12 betweeny which andsaid tapered pOrtionan obtuse angle is formed. Thetapered Y end of the nipple lits into-the laringse'at of the adjacent nipple, which is provided with a shoulder litcfiitthe angle betweenV the' straight and tapered portions 1,2 and 11, so 1 that when' the tubes are assembled,` the joints Y betweenthe nipples WilLbebrOkenand any j sediment entering thefj'o'int will lodge in the the tubes.

receive' the-tapered ends ofthe inner'npples,

l angle andl aid in preventing. leakagebetween,

said openingffashioned to itthe tapered and -a straightportions of the nipple and form. a

close joint therewith.V The next tubewill v have itsnipple seated inthe flaring end'of y j Y the nipple of the first tube -and so'onltoth'e outer end of the'group', where the tube is vprovided with a nipple 16 having a-closed concave end wall l17 against which one arm 18 of a spider 19-is seated. i tapped into the front wall lof the water chamber and passes throughthe spider 19 A bolt20 is Y and an arm 21 is provided on` said spider' i, for bearing on said'wall within ajsocket 2 1 therein. This manner of mounting the spider on the wall ofthe water Chamber positively holds it in position thereon;

ATwo ofthe arms 18` are preferably Qprovided to bear on thenipples of adjacent groups of tubes, as shown in Figurej1,'and

when the'bolt 20 is tightened the spider willybesecurely clamped 0n the wall of the chamf ber andthe nipples will bepressed firmly-to# i gether to close the joints betweenthein and .prevent leakage. Whenever desired, the nut j Vy on the bolt 20 may be loosened and. thereupon .the tubes of two adjacent groups fwill befreleased from their pressureand may bei sepa- 1 rated from one another to obtain access the inner tubes or to V"the chambers lwith which they are connected.

l have shown the spiders .adapted -or clamping two groups of tubes, but provision may be made for securing a. greater number of them by providing additional arms on the spiders. The arrangement at the bottoni of theradiator is substantially the saine as described with reference to the top and 'l will indicate the parts by the same reference numeral, `with the addition ot the exponent a.. T he circulating tubes are ot ordinary construction and are provided with the well-known radiating discs 221; secured at intervals thereon. l have only shown a portion ot one end ot the radiator, it being understood that the construction is the saine from -end to end and VJthat asmany v,groups of ,tubes may be employed as are 'found necessary to obtain the desired radiating surface. The circulating-tubes are interchangeable, being of similar construction, and as shown in Figure 3, instead ot providing an integral wall in the nipple or the outer tube, l may employ a removable cap 23, which is seated in the flaring-end of the nipple and has the tapered and straight surfaces in angular relation to titA the correspondingly shaped walls-of the nipple. All these joints are suitably `ground-so `that whenthe tubes are assembled in groups ,and locked together the radiator will be watertight. i

ln a radiator oi this construction there is some freedom of movement ot theV groups of tubes and ot one tube upon another', so

that the racking or twisting ot the radiator when 'in use ina car will becompensated 'for and leakage will not be as vlikely to occur as .where the radiator is made in sections permanently secured together.

I have found that with a radiator made in this way damaged tubes can lbe easily and lquickly replaced; the expense of manufacture is reduced, aseach unit can be handled separately. l am also able to dispense with the work of skilled mechanics, as the parts can be readily assembled by the use ot plyers or a wrench, no soldering being necessary. By blocking oil a damaged section the radiator can be used with one or more units cut ofi from the remaining units. The straight extensions on the tapered ends of the nipples provide a means tor Lkeeping the headers in proper alignment and also aids in obtaining a more perfect joint between the tubes.

liith a radiator ot this kind the radiating surface can .be increased or .decreased to compensate i'or variations and weather con- .'ditions.

I claimvas my invention:

l. A radiator for gas engines comprising a head having a water chamber therein, a base having a water chamber, circulating tubes arranged in groups between said chainbers, said tubes having nipples formed on the ends thereof, one tube of each group havingits nipples seated in openings in the walls ot saidV water chambers and the re-V maining tubes of the group having their nipples seated one within the other, said nipples having` straigl'it and Haring seat portions and ineansmounted in saidv head and base tor clamping the nipples ot the groups together.

2. A radiator for engines comprising a head having a water'chamber therein, a base also having a water chamber, a series oit water circulating tubes Vbetween said head and base, said tubes being arranged in groups and having nipples at their ends iitting one within the other, and each nipple having a tapered end terminating in a straight portion lat an angle to the tapered portion and the adjacent nipple having a daring and a straight surface wherein said tapered and straight port-ions are seated.

3. A radiator for gas engines comprising a head having a water chamber therein, a base also having a water chamber, circulating tubes arranged iii/groups between said chambersand communicating therewith, the tubes ot said groups 'being arranged in parallel relationv and having nipples at the'ends thereof `for interlocking one with the. `other to' form a water-tight joint between the tubes, Vspiders having arms for bearing on the outer nipples oi' adjacent groupsand onY the wallsot said chambers, and bolts passing throughsaid spiders and tapped into said walls for clamping the nipples ot the groups ottubes together.

si.. A radiator comprising a head having a water chamber, a base also having a water chamber, theopposite walls of said head and base Yhaving'g; inwardly projecting portions at the rear thereof forming a recess betweenV said portions and the iront of said chamber,

circulating tubes arranged in groups each tube of a group having nipple at each end thereotl fitting the other nipples ot the coi'- responding ends in said recesses, the nipples ot the inner tubes being` seated within openings inthe projecting portions ot said wall, and means mounted on said head and base and engaging the nipples ot the outer vtubes oit each group toiipiessing all the nipples ot that group together, Yfor the purpose specitied. y

A radiator comprising ahead and a lbase having water chambers `therein, circu-Y lating tubes arranged in groups, the A"inner .tube ci each group having nipples communieating with the chambers of said 'head and*r Vbase and the other tubes'ot each Orou) havine` nipples communicatingwith one another and with saidinner'tubes respectively,vspi ders mounted'on said head and base and having pairg'oi inwardly projecting arms seated in the nipples of the louter tubes of adjoining groups for forcing the tubes of the same' group together, and said spiders having also outwardly projecting" arms seated in recesses in said head and base.

6. A radiatorl for gas engines comprising a head and base and side kbars connecting the from said head and base independently rot' the other groups, the inner tube of each group being seated in the inwardly projecting portions oft said head and base for communication therethrough -with said Water chambers, and the remaining tubes of the same group being seated one upon the other to form a row extending to the front of the radiator, the outer tubes oi' the groups being iush substantially with the .forward walls saidV Walls and bearing onthe outer tubesV of the groups for pressing them` inwardly upon one another and upon ytheir bearings in said projecting portions.

7. A' radiator for gas engines, comprising a. head and a base havlng VWater chambers therein, circulatingitubes arranged in groups betweenrsaid chambers, each of said tubes having nipples formed on. the ends thereof, one end of Veach nipple beingrtapered and of the head and base and means mounted on the other end having a seat to receive the tapered end of the adjacent'nippldthe groups of tubes being'arranged in rows with each tube. of a group having its nipples seated in the nipples ofthe preceding tube and means bearing on the tubesA of each.

group vfor clamping all the nipplesk of that group together, release of thev clamping Vmeans of a group of tubes allowing the re moval or' anyV tube of that groupwithout disturbing the'tubes of the other groups', In kwitness whereof, VI have hereuntoset my hand this 31st day ot' January, 1919.7v FRANK TODD. 

